I started out trading by buying low and selling high. And guessing. It doesnt work very well.

It works better than buying high and selling low!

Bitcoin doesn't have a predictable market, it is too thin and volatile, voodoo charts don't work on it. One person can drop the market 10% in a minute because they need money to buy a car, and in 10 minutes more, the people that got zhoutonged betting that wouldn't happen push it down another 10%.